This crazy looking <a href="http://inhabitat.com/gorgeous-new-saint-petersburg-zoological-park-to-be-built-by-beckmann-n%e2%80%99thepe-and-tn-plus/">glass dome </a>was built to honor the memory of Brazilian social activist Dr. Ruth Cardoso. Designed by São Paulo-based firm, <a href="http://www.deciotozzi.com.br/_us/flash/decio-tozzi.htm">Decio Tozzi</a>, the Orchidarium Professor Ruth Cardoso is a highly controlled environment specifically designed for growing orchids with the perfect the amount of light, humidity, temperature and air movement. As such, the diaphanous hut is <a href="http://inhabitat.com/category/daylighting">naturally daylit</a> with a concrete spine to control ventilation into the space.

1

The Orchidarium

Recently completed in 2010, the Orchidarium is located in the Villa-Lobos Park in Brazil and can be accessed via a gently sloping ramp.

2

The Orchidarium

Buried 1.5 meters below the surface, the bottom part of the dome is protected from the environment.

3

The Orchidarium

A body of water surrounds the building and is held at bay by a large concrete wall, making the dome seem as though it were submerged in water.

4

The Orchidarium

A cantilevered platform over a sunken area near the Orchidarium.

5

The Orchidarium

The entrance to the Orchidarium.

6

The Orchidarium

The steel, glass and concrete building was designed to provide optimum interior conditions for growing orchids.

7

The Orchidarium

Inside, the space is filled with diffuse, gentle light reminiscent of the quality of daylighting found in the orchids' natural habitats.

8

The Orchidarium

As the sun sets, daylight fills the space with a glowing light.

9

The Orchidarium

Looking straight up from inside the building to the center of the dome.

10

The Orchidarium

The concrete spine that separates the dome in half is responsible for the ventilation control necessary for the orchids' delicate environment.

11

The Orchidarium

Delicate plants inside the dome.

12

The Orchidarium

Floor plan of the Orchidarium.

13

The Orchidarium

Cross section of the Orchidarium.

14

1/14

The Orchidarium

This crazy looking glass dome was built to honor the memory of Brazilian social activist Dr. Ruth Cardoso. Designed by São Paulo-based firm, Decio Tozzi, the Orchidarium Professor Ruth Cardoso is a highly controlled environment specifically designed for growing orchids with the perfect the amount of light, humidity, temperature and air movement. As such, the diaphanous hut is naturally daylit with a concrete spine to control ventilation into the space.